@BillGates: Vaccines are a miracle. But how exactly do they work? I explain the science behind vaccines and why our foundation’s investment in them is one of the best we’ve ever made: https://t.co/fwpQOp93kb https://t.co/ODohrGfsKg
http://twitter.com/BillGates
Vaccines are a miracle. But how exactly do they work? I explain the science behind vaccines and why our foundation’s investment in them is one of the best we’ve ever made: https://t.co/fwpQOp93kb pic.twitter.com/ODohrGfsKg
— Bill Gates (@BillGates) February 17, 2020
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